Hearty Fish Ragu with Fresh Vegetables

Ingredients

• Fresh white fish fillets (such as cod or haddock) : 500 g
• Olive oil : 3 tbsp
• Onion, finely chopped : 1 large
• Garlic cloves, minced : 3 cloves
• Carrots, sliced : 2 medium
• Celery stalks, sliced : 2 stalks
• Bell peppers (red and yellow), diced : 2 medium
• Zucchini, sliced : 1 medium
• Canned diced tomatoes : 400 g
• Fish or vegetable broth : 250 ml
• White wine (optional) : 100 ml
• Tomato paste : 2 tbsp
• Fresh parsley, chopped : 2 tbsp
• Fresh basil, chopped : 1 tbsp
• Salt : to taste
• Black pepper, freshly ground : to taste
• Dried oregano : 1 tsp
• Red pepper flakes (optional) : 1/2 tsp